3. The Associate Dean for Library Services wants to estimate themean number of times students use the library during a semester. Asample study of 35 students showed a mean of 11 times with astandard deviation of 3 times. A. What is the population mean,using a 99 percent confidence interval? B. What can be concludedfrom the results? C. What is the population mean, using a 95percent confidence interval? D. What can be concluded from theresults?